Toussaint, who worked with some of the biggest musicians of the last several decades during his long career, had been set to perform in Madrid, Belgium, and London later this week, with his death being completely unexpected.

Last week, Toussaint and his longtime friend, Paul Simon, announced they would be performing together on December 8 at

In order to help salvage the Louisiana coastline from the massive oil spill, Lenny Kravitz is headlining a benefit concert to fund relief efforts.

The US government made BP responsible for the clean-up costs, but many believe that the area is so devastated that their money is just not enough. Local business and wildlife are both under tremendous strife.

Mos Def, Ani DiFranco and Allen Toussaint have also agreed to perform at the event at Mardi Gras World River City this Sunday.